What Makes Someone A Libertarian?

I’m more interested in arguing with standard liberals about the nature and scope of specially-protected rights and liberties within the settled context of the liberal-democratic nation-state than in arguing with standard libertarians about the justification of taxation, publicly-financed education, or welfare transfers. After all, there are many orders of magnitude more standard liberals than standard libertarians, and they possess many orders of magnitude more influence. We pick our fights, and I’d like to pick ones that stand a chance of making a real difference.